けい-T てぃう境界 きょうかいじゃありませんでした
keitiukyōkaijārimasendeshita

Noun
Desu Copula

The polite, past negative form of K-T境界

1. Was not the K-T boundary.; It wasn't the K-T boundary.

Past/Perfective
Negative
Polite
Terminal Form
Geology